Ray Dalio

Dalio is likely to be much higher on this list in the years to come. Why? Because. After George Soros, he is the second richest hedge fund guy in America — with a fortune most recently estimated at

$14.8 billion — and a well-established passion for protecting the environment. Dalio sits own the board of the National Fish and Wildlife Foundation, where he has donated at least $3.2 Million. He’s also given to a variety of conservation and parks organizations over the years. Look for much bigger giving to come from this environmentalist and Giving Pledge.